Updating Stiffness and Hysteretic Damping Matrices Using Measured Modal Data

THE MODEL UPDATING OF MASS, DAMPING AND STIFFNESS MATRICES

Mass, Stiffness, and Damping Matrices from Measured Modal Parameters

The theory of complex mode shapes for damped oscillatory mechanical systems is explained, using the matrix of transfer functions in the Laplace domain. These mode shapes are defined to be the solutions to the homogeneous system equation. It is shown that a complete transfer matrix can be constructed once one row or column of it has been measured, and hence that mass, stiffness, and damping matr...

the model updating of mass, damping and stiffness matrices

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FEM Updating for Offshore Jacket Structures Using Measured Incomplete Modal Data

Marine industry requires continued development of new technologies in order to produce oil. An essential requirement in design is to be able to compare experimental data from prototype structures with predicted information from a corresponding analytical finite element model. In this study, structural model updating may be defined as the fit of an existing analytical model in the light of measu...

fem updating for offshore jacket structures using measured incomplete modal data

marine industry requires continued development of new technologies in order to produce oil. an essential requirement in design is to be able to compare experimental data from prototype structures with predicted information from a corresponding analytical finite element model. in this study, structural model updating may be defined as the fit of an existing analytical model in the light of measu...